Split hopkinson pressure bar bullet electromagnetic recovery device

Abstract

The invention discloses a split hopkinson pressure bar bullet electromagnetic recovery device. The split hopkinson pressure bar bullet electromagnetic recovery device comprises a test bench, a launching device, an electromagnetic device, a launching gun barrel, a laser emitter, a laser receiver, an incident rod, a transmission rod and a limit transmission rod. The launching device is fixed on thetest bench through a base, and the launching device is connected with the launching gun barrel through the electromagnetic device. The split hopkinson pressure bar bullet electromagnetic recovery device has the beneficial effects that when a bullet is not completely returned to a home position, an electromagnetic recovery device continues to work until the bullet is completely homing, ensuring that a firing position of the bullet is fixed in each experiment, and when the bullet needs to be recovered, electromagnet is electrified through a current control device, a magnetic force is generated,the bullet is pulled, the current is automatically cut off after the bullet contacts the electromagnetic recovery device, thereby realizing the recovery of the bullet. The split hopkinson pressure barbullet electromagnetic recovery device is simple in implementation, convenient to control and good in controllability.

Description

technical field [0001] The invention belongs to the field of Hopkinson pressure rods, and in particular relates to an electromagnetic recovery device for Hopkinson pressure rod bullets. Background technique [0002] The Hopkinson pressure bar is a device for testing the dynamic mechanical properties of materials. It is mainly composed of gas storage equipment, launch system, bullets, measurement system, central support components, basic guide rails, buffer devices and auxiliary equipment. The core part is two separate elastic waveguide rods, that is, the input rod and the output rod, and the material is sandwiched between the two rods. The loading pulse is generated by the bullet striking the end of the input rod. The bullet is accelerated in the launch tube by the propelling action of the high-pressure gas to a certain impact velocity, at which speed it hits the end of the input rod, producing an incident elastic pressure pulse whose duration depends on the length of the b...

AI Technical Summary

Problems solved by technology

Before each experiment, it is necessary to push the bullet through a hollow plastic tube with a diameter of 22mm from the free end of the launch tube to the innermost end. This process greatly consumes the time and physical strength of the experimenters.

Images